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Thermoscreens / Mitsubishi Electric
PHV2000NT Chilled Water Heat Pump,
Dry Cooling Unit - Split System
The PHV2000NT Chilled Water Heat Pump System consists of :-
a Thermoscreens 'PHV2000NT Dry Cooling Unit' with Mitsubishi Electric PAC-IF010B-
E Interface PCB and PAR-W21MAA Controller and Siemens RDG400 Manual Room
Control for manual control by the end user *
a Mitsubishi Electric PUHZ-HW140VHA2/YHA2 Air to Water Outdoor Unit *
*
- supplied by Mitsubishi Electric
Water Pipework Installation and Water Pump(s)
‡
Electrical
installation
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a 2-pole On/Off Switch for the end user
‡
a 2-pole Isolator for the S1, S2, S3 link
‡
‡
- installation items supplied and fitted by installer
Thermoscreens PHV2000NT
Dry Cooling Unit
Mitsubishi Electric
PUHZ-HW140
Outdoor Unit
Permanent 1-phase mains electrical supply
Siemens RDG400
Manual Room Control
On/Off – Input
Cooling Temp Set Point – Input
Air Temp Sensor – Input
(alternative to return air temp sensor in unit)
S1, S2, S3 link
Permanent electrical supply
(from local switched isolator)
Pump
Flow and Return water pipework
Remote Signals
On/Off - Input
Mitsubishi Error - Output
Room over-temp alarm - Output
Chilled water pipework
Electrical cables
Control cables
Supplied and fitted inside plastic end
cap. Not used for control by the end
user, only needed so the outdoor
unit will run.
2-pole On/Off Switch for End User
(easily accessible next to unit)
[connect fire alarm circuit here]
Mitsubishi Electric
PAR-W21MAA
S1, S2
Isolator